In ref. [1]}, a set of LHC constraints was recast on the \(M_{Z^\prime } - g_{Z^\prime } \)  plane of the theory. Figure 10 of that paper shows that the previously allowed light \( Z^{\prime } \)  region of parameter space, with
\(M_{Z^\prime }<0.3\)  TeV, is all but ruled out, and in the rest of the paper, we
shall assume that \(M_{Z^\prime }>1\)  TeV. A recent recasting of the CMS high-mass di-lepton searches [2]} eliminated at 95% CL
all parameter points with \( M_{Z^\prime } \lesssim 2 \text{~TeV}\)  [3]}.
